hadoop - Hadoop表示启动了datanode，启动了它，但稍后未在jps中显示

Question

数据节点日志:

ulimit -a用于用户sumitkhanna:

core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 63202
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 63202
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

Configured Capacity: 0 (0 KB)
Present Capacity: 0 (0 KB)
DFS Remaining: 0 (0 KB)
DFS Used: 0 (0 KB)
DFS Used%: �%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 0 (0 total, 0 dead)

本质上，在将本地文件复制到hdfs中会产生错误。

Answer 1

JPS输出不一致，具体取决于通常可以解决的多种因素，但我停止尝试了。使用“ps”作为事实来源:

ps ax | grep DataNode

希望您会看到它。